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Slewing bearing assembly method steps and precautions

2022-09-28

Assembly plays a very large role in slewing bearings. Correct assembly can not only ensure the normal operation of the bearing, but also prolong the life of the bearing to a certain extent. So, do you know how to assemble a slewing bearing? Today, Zhiyuan Slewing bearing factory introduced the methods and precautions for assembling Slewing Ring Bearing, hoping to help you.

 

slewing bearings

 

a. Slewing bearing assembly method steps

 

1. Correct placement of inner and outer elements

 

First, lay the external cause flat on the workbench, put it into the lower half of the inner sol, and align the external cause roller with the internal cause wave. Position the rollers and release block correctly. The optional cylinder dialogue and circular divider blocks are placed along this path, with the axes perpendicular to each other when adjacent cylinders are rolled 10 times, with a divider block between the two cylinders. (optional, ring divider block, ring divider block, ring divider block, ring divider block, ring divider block, ring divider block, ring divider block).

 

2. Apply grease on the roller

 

Lightly grease the rollers to fill the gaps between the rollers and the separator block. The number of rollers and separation blocks is usually the same, and the cylindrical stylus must be close to the separation block. If there is a gap between the sub-block and the separation block, the gap can be filled by adjusting the thickness of one or two separation blocks.

 

3. Mounting screws or bolts

 

Tighten the two diametrically opposite mounting bolts 1-2 turns and rotate the other entire ring so that the rollers don't get stuck in place. Then, unscrew two symmetrical studs at 180 intervals until all bolts are tightened to the specified torque value. When tightening the bolts, it is recommended to ensure that the adjustment plate is in place and use a load cell wrench to ensure that the bolts receive the specified preload torque.

 

4. Support the debugging of no-load rotation resistance torque.

 

Preload can make it difficult for the slewing bearing to turn. If there are no other testing tools, it can be tested in a simple way. That is, use a hard angle iron or steel tube as a lever, sandwiched between two diametrically opposed bolts, pull one end of the stem through a spring balance, rotate the inlet bearing cap, measure the turntable bearing by the reading of the spring balance and the length of the lever when the turntable bearing is unloaded starting friction torque. The initial friction torque is predetermined according to the preload of the rotary bearing. If it still won't spin, the roller alignment may be stuck. Loosen the bolts at this point until the sleeve can rotate, then tighten the bolts.

 

5. Install the adjusting gasket

 

Install the adjusting shims over the mounting bolt holes, each tab must be the same thickness. Place the upper half of the inner circle, being careful not to move the adjustment plate at this time. Using the lever and spring balance method described above, the initial friction torque under preload can be confirmed. The actual rotation short dimension is equal to the load value displayed on the spring scale multiplied by the vertical distance from the spring scale to the center of rotation. If the torque is too low, the swivel bearing can be re-disassembled, if necessary, to remove tabs of the same thickness from each adjustment set, and this process may need to be repeated several times until the bearings are properly preloaded.

 

6. Install the lip seal

 

Before installing the lip seal, apply loose glue to the threaded parts of the bolts and screws to avoid unnecessary troubles in later operation and use, and then install the lip seal, which has a whole ring, and the longer material Bite with ring to dry. Choose according to your actual needs.

 

Slewing bearing assembly method steps and precautions

 

b. Precautions for slewing bearing assembly

 

1. Pay attention to cleaning.

 

(1) Cleaning of the bearing itself: The bearing must be cleaned before assembly. When cleaning, the slope of the inner ring should be upward, and the hand should be flexible. After drying, a certain degree of oil should be added. This is to prevent other dirt from affecting the bearing again, and to have a certain lubricating effect on the bearing to ensure smooth operation in the later stage.

 

(2) Clean installation environment: The slewing bearing assembly should be carried out in a clean and dust-free environment to avoid adverse effects on the bearing assembly from the outside world. In addition, the bearing should also be installed in a clean and well-ventilated place. When installing the bearing, it should be carefully selected and polished. clapboard.

 

2. Give strength subtly

 

Special tools should be used when assembling the slewing bearing to ensure the rationality of the force, and the shaft cannot be evenly supported and beaten during formal installation. Avoid bearing damage and affect bearing life.

 

Slewing bearing assembly method steps and precautions

 

This is Zhiyuan's method of assembling a slewing plate bearing, assembly method steps and considerations. The steps of assembling a slewing plate bearing include internal and external, applying grease on the rollers, installing screws or bolts, adjusting the no-load rotation resistance torque of the bearing, installing adjusting washers, installing lip seals, etc. If there is any problem in actual operation, You can send an email to Zhiyuan Slewing bearing factory, we will give you a more comprehensive answer.